To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1 Tail-flip sequence recorded during volumetric (3D) PIV. Note ventral movement of pleopods prior to tail flexion. Morphology, performance and fluid dynamics of the crayfish escape response Jocelyn Hunyadi, Todd Currier, Yahya Modarres-Sadeghi, Brooke E. Flammang, and Ethan D. Clotfelter Journal of Experimental Biology 2020. 223:None-None; doi: 10.1242/jeb.219873 Download Original Video